Bug 19528: Fix a few typos like corrosponding

Bug 19528: Fix a few typos like corrosponding

[1] Replace corrosponding => corresponding
[2] Replace containts => contains
[3] Replace item_level-itypes => item-level_itypes
[4] Replace Managment => Management
[5] Replace should returns => should return

Test plan:
Note that this patch only deals with POD lines or test descriptions.
So there is nothing to test, just read the patch.

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Patch amended by RM: The release notes should not be modified

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>